The main event of the parade is the West Indian-American Day Parade, which attracts between one and three million participators. The spectators and participators watch and follow the parade on its route along Eastern Parkway.

The earliest known Carnival street parade was held on September 1, 1947. The Trinidad Carnival Pageant Committee was the founding force behind the parade, which was held in Harlem. The parade route was along Seventh Avenue, starting at 110th St.

The first Carnival Queen was Miss Dorothy Godfrey. The Committee raised money to finance the parade. They sold advertisement space and boosters, that were printed in a Souvenir Journal for West Indies Day, a booklet which is a memento of that first parade. Mrs. Jessie Waddell Compton is presented in the journal as the person "whose inspiration and enterprise" was owed to the formation of this committee. The committee consisted of Mrs. Waddell Compton-Chairman; Ivan H. Daniel-Vice Chairman; Conrad Matthews-Treasurer; Roy Huggins-Secretary; and Robert J. Welsh-Assistant Secretary. Each member of the committee contributed in helping to organize the parade. The after-parade party, which the Trinidad Carnival Pageant Committee held at the Golden Gate Ballroom (located at 142nd St. and Lenox Ave), was arranged by James M. Green, another figure who helped make the first Carnival Parade in Harlem successful.